Businesses that host patrons or guests and wish to ensure their mobile phones work seamlessly and all the features of their mobile carrier connection are the same while visiting their venues, there are more recently a wide range of options being promoted. Many of these are promoting Wi-Fi as the wireless solution —some even calling it “Wi-DAS”—as an alternative to traditional cellular coverage and connectivity. Others promoting a capability called Passpoint and Wi-Fi Calling as the end-all solution that makes Wi-Fi work like cellular.

While Wi-Fi is powerful and important, it’s crucial to understand what it can mean for your patron and guest experience and what technologies like Passpoint and Wi-Fi Calling can and cannot do, especially when it comes to mobile voice, emergency calling, and seamless user experience.

Let’s set the record straight.

What Passpoint and Wi-Fi Calling Really Do

Passpoint (formerly Hotspot 2.0) simplifies the authentication process to connect to Wi-Fi—nothing more. Some mobile operators now embed Passpoint profiles on phones (e.g., Xfinity Mobile), but it still requires the venue to support it. Even then, users may get prompted to join.

Wi-Fi Calling enables voice calls over Wi-Fi. But it must be manually enabled by the user (off by default on iPhones), and in many environments, the voice quality is subpar. It does not provide the same experience as cellular—no seamless handoffs, inconsistent emergency call support, and often unpredictable reliability.

Why It Matters: User Experience & Safety

Imagine walking into a large store while on a call. If your phone loses cellular signal and you’re relying on Wi-Fi Calling what will happen?

• Your call will drop, virtually guaranteed.
• You may or will need to reconnect to Wi-Fi in the venue (Passpoint may make this easier, but not transparent).
• If Wi-Fi Calling isn’t turned on, you’re out of luck and will drop your call.
• Once you are on Wi-Fi Calling your experience will surely vary, in the form of garbled voice or lost sentences.

MOST IMPORTANTLY – now imagine calling 911 in that store. If you enabled Wi-Fi Calling at home and listed your home address, emergency responders may show up there—not where you are.

This isn’t just an inconvenience—it’s a liability for your venue.

Liability and Wi-Fi Calling

Unlike cellular networks—which must comply with strict 911 location regulations—Wi-Fi Calling places the burden of emergency routing on the user.

When, and if, a user sets up (enables) Wi-Fi Calling on an iPhone for example it will request am Emergency 911 Address to use.  When it’s an emergency, it is doubtful that anyone would be thinking to change it to the location they are currently in, as a result the first responders will arrive at the wrong location.

Naturally technology can and will evolve and we may expect over time there will be more integration between Wi-Fi service functions and Cellular service functions.

Enterprises should ask: If a customer makes a 911 call over your Wi-Fi, are you responsible if the call is misrouted?

If that’s a concern, it’s possible to block Wi-Fi Calling at the firewall by restricting specific ports or domains.

Why Indoor Cellular Coverage Remains Superior

Cellular technology is built for mobility and reliability:

• Seamless Mobility: Handovers between cells are automatic and invisible to users – it just works.
• Robust Frequencies: Cellular uses low and mid-band spectrum that penetrates walls, shelves, and steel more effectively than 5GHz Wi-Fi.
• Always-On Voice: Voice and emergency services are enabled by default—no user action needed.
• 911 Accuracy: Modern cellular networks can locate callers within 1 square meter indoors.
• Consistent Performance: Cellular offers exceptional speed and reliability across devices.
• Transparent Connections: Cellular protocols will automatically choose different frequency bands, cells, etc. to maintain connectivity.

What About Private Cellular Networks?

In the U.S., spectrum like CBRS, empowers businesses to deploy private cellular networks to complement Wi-Fi networks, enabling powerful decision making on how an IT organization can parse traffic flows and connections for expanding wireless devices that may demand more secure, more deterministic traffic flows, and greater mobility.

When considering a private wireless network for guest connectivity there are two methods to consider:

1. Private SIMs: To enable a mobile device to attach to the private wireless network the device will require a SIM/eSIM be added.  This process is not necessarily an easy one for enabling guests, at least in today’s mobile phone constructs.  Most devices today support the spectrum and support a method of having multiple SIMs and certain mobile phone operating systems, such as the latest iPhone IOS 18, have made it easier to add a SIM via a retail mobile application for example. For employees however this can be a great option, enabling specialty devices such as hardened in-store communication radios, tablets, scanners, and more to stay connected and secure. In either of these cases, guest or employee devices, the voice over Wi-Fi scenarios are noted early operate in the same way.
2. MOCN (Multi-Operator Core Network):  This capability essentially adds a feature to a private wireless network to support connectivity to public carrier networks, and it transparently connects subscribers’ devices to the private wireless network seamlessly, maintaining all mobile features—including connection handovers, all e911 calling features including location of the subscriber. No additional applications to make this work are needed. While this may sound like a fantastic option, the process of deploying and configuring equipment and software to enable this takes experts in this area of technology and close relationships with the mobile carriers to enable and test its operation.  Moreover, not all carriers are quick to join such networks.  So, proceed with caution.

What’s Next for Wi-Fi?

Wi-Fi is evolving too. Efforts like OpenRoaming aim to offer smoother, more secure roaming between networks. Over time, Wi-Fi and cellular convergence will improve—across authentication, spectrum use, and service continuity.

But adoption takes time. Devices, networks, and standards all need to align.

This is not a new topic or discussion among the standards groups or the technology developers, but keep in mind that each (Cellular and Wi-Fi) operate in different camps of standards definitions and they themselves are not converged.

Final Thoughts

If your business depends on mobile devices—for customer engagement, employee tools, or operational efficiency—don’t settle for shortcuts and be wary of proposals that may seem radical what they can achieve.

Ask tough questions:

• What does your mobile experience look like in reality, not just on a spec sheet?
• Can users call, connect, and move freely—without having to think about it?
• Is your network prepared for emergencies?

Work with partners who will guide you to the right solution—not just what they sell.

If you still have questions, want to learn more, or want some guidance on the best approaches connect with HALO Networks to schedule an advisory meeting.